Asymmetric supercapacitors with excellent rate performance by integrating Co(OH)F nanorods and layered Ti₃C₂T_x paper

Abstract

Here we describe an aqueous asymmetric supercapacitor assembled using Co(OH)F nanorods on Ni foam (Co(OH)F@NF) as the positive electrode and layered Ti3C2Tx paper on Ni foam (Ti3C2Tx@NF) as the negative electrode.

Facile Synthesis of Microsphere-like Co0.85Se Structures on Nickel Foam for a Highly Efficient Hydrogen Evolution Reaction

“…As depicted in Figure 1(a2), the diffraction peaks of the first-step hydrothermal product closely match those of Co(OH)F (JCPDF no: 50-0827). The diffraction peaks at approximately 20.8 • , 32.3 • , 33.5 • , 34.8 • , 35.6 • , 38.8 • , 39.9 • , 52.7 • , 56.9 • , 59.1 • , and 61.5 • correspond to the (110), (310), ( 201), (400), ( 111), ( 211), ( 410), (420), ( 511), (002), and (601) planes of orthorhombic Co(OH)F, confirming their good agreement with previous literature reports [26][27][28]. During the second hydrothermal step, the Co(OH)F structure underwent conversion into Co 0.85 Se through a low-temperature selenization process (Figure 1 To investigate the chemical states of the microsphere-like Co0.85Se, we performed further XPS measurements (Figure 1b-d).…”

Enhancement of the electrochemical properties of vanadium dioxide via nitrogen-doped reduced graphene oxide for high-performance supercapacitor applications

“…From a low (5 mV s −1 ) to high (100 mV s −1 ) scan rate, the CV curves maintain a quasi-rectangular shape without any significant distortion, demonstrating the high rate capability of this electrode material. 66 Obviously, the CV curves showed an increase in the current response and integrated area proportional to the scan rate. Fig.…”

Research progress on hydroxide fluoride-based electrode materials for supercapacitors

“…Therefore, strategies such as doping and compositing have been employed to improve the performance of hydroxide fluorides. Although there have been reports on the use of hydroxide fluorides in energy storage applications such as lithium batteries [45][46][47][48] and supercapacitors [49][50][51][52] , the current performance is not sufficient to support large-scale energy storage applications. There is a wide variety of hydroxide fluorides, and common metal cations found in hydroxide fluorides include Mg, Co, Ni, Cu, Zn, and Cd, among others [53][54][55][56] .…”